package com.itcast.security;

import com.alibaba.dubbo.config.annotation.Reference;
import com.itcast.pojo.Permission;
import com.itcast.pojo.Role;
import com.itcast.pojo.User;
import com.itcast.service.Userservice;
import org.springframework.security.core.GrantedAuthority;
import org.springframework.security.core.authority.SimpleGrantedAuthority;
import org.springframework.security.core.userdetails.UserDetails;
import org.springframework.security.core.userdetails.UserDetailsService;
import org.springframework.security.core.userdetails.UsernameNotFoundException;
import org.springframework.stereotype.Component;

import java.util.ArrayList;
import java.util.List;
import java.util.Set;

@Component
public class SpringSecurityUserService implements UserDetailsService {
    @Reference
    private Userservice userservice;
    //根据用户名调查用户信息
    @Override
    public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException {
           User user = userservice.findByName(username);
           if(user == null){
               //用户用户不从在
               return null;
           }
        List<GrantedAuthority> list = new ArrayList<>();
        Set<Role> roles = user.getRoles();
        for(Role role:roles){
            //授予角色
            list.add(new SimpleGrantedAuthority(role.getKeyword()));
            Set<Permission> permissions = role.getPermissions();
            for (Permission permission:permissions){
                //授权
                list.add(new SimpleGrantedAuthority(permission.getKeyword()));
            }
        }
        UserDetails userDetails = new org.springframework.security.core.userdetails.User(username,user.getPassword(),list);
        return userDetails;
    }
}
